LLM Reference

o4-mini on OpenRouter

o3 · OpenAI

Serverless

Pricing

TypePrice (per 1M)
Input tokens$1.10
Output tokens$4.40

Capabilities

VisionMultimodalReasoningFunction CallingTool UseJSON ModeCode Execution

About o4-mini

Fast and cost-efficient reasoning model with vision support for math, coding, and visual understanding. Retired from ChatGPT February 13, 2026 but still available via API. Released April 16, 2025.

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Model Specs

Released2025-04-16
ArchitectureDecoder Only
Knowledge cutoff2025-08

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